<?php

/*
 * Copyright 2008 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#namespace tehframework\routing;

#use \OutOfRangeException;
#use tehframework\request\Request;
#use tehframework\response\Response;

class RouterImpl implements Router
{
	/**
	 * @var array<string,Route>
	 */
	protected $routes;
	
	/**
	 * @param  string $routeName
	 * @param  Route $route
	 * @return RouterImpl
	 */
	public function connect($routeName, Route $route)
	{
		$this->routes[$routeName] = $route;
		
		return $this;
	}
	
	/**
	 * @param  string $routeName
	 * @param  array<string,string> $args
	 * @param  array<string,mixed> $opts
	 * @param  Request? $request
	 * @return string
	 * @throws OutOfRangeException
	 */
	public function build(
		$routeName,
		array $args = array(),
		array $opts = array(),
		Request $request = null)
	{
		if (!isset($this->routes[$routeName]))
		{
			throw new OutOfRangeException(sprintf(
				'[%s] route does not exisit in [%s] router.',
				$routeName, get_class($this)
			));
		}
		
		return $this->routes[$routeName]->build($args, $opts, $request);
	}
	
	/**
	 * @param  Request $request
	 * @param  Response $response
	 * @return array<string>
	 */
	public function route(Request $request, Response $response)
	{
		$matchedRoutes = array();
		
		foreach ($this->routes as $routeName => $route)
		{
			switch ($route->match($request, $response))
			{
				case Route::RESULT_CONTINUE:
					$matchedRoutes[] = $routeName;
					break;
				
				case Route::RESULT_MATCH:
					$matchedRoutes[] = $routeName;
					break 2;
				
				case Route::RESULT_NO_MATCH:
				default:
					break;
			}
		}
		
		return $matchedRoutes;
	}
}